Merge pull request #32934 from ajweeks/fix-scale-origin

Fix 2D scale gizmo placement

editor/plugins/canvas_item_editor_plugin.cpp

@@ -1812,7 +1812,7 @@ bool CanvasItemEditor::_gui_input_scale(const Ref<InputEvent> &p_event) {
 				if (_is_node_movable(canvas_item)) {
 
 					Transform2D xform = transform * canvas_item->get_global_transform_with_canvas();
-					Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * Transform2D(canvas_item->_edit_get_rotation(), canvas_item->_edit_get_position())).orthonormalized();
+					Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * canvas_item->_edit_get_transform()).orthonormalized();
 					Transform2D simple_xform = viewport->get_transform() * unscaled_transform;
 
 					drag_type = DRAG_SCALE_BOTH;
@@ -1846,7 +1846,7 @@ bool CanvasItemEditor::_gui_input_scale(const Ref<InputEvent> &p_event) {
 			drag_to = transform.affine_inverse().xform(m->get_position());
 
 			Transform2D parent_xform = canvas_item->get_global_transform_with_canvas() * canvas_item->get_transform().affine_inverse();
-			Transform2D unscaled_transform = (transform * parent_xform * Transform2D(canvas_item->_edit_get_rotation(), canvas_item->_edit_get_position())).orthonormalized();
+			Transform2D unscaled_transform = (transform * parent_xform * canvas_item->_edit_get_transform()).orthonormalized();
 			Transform2D simple_xform = (viewport->get_transform() * unscaled_transform).affine_inverse() * transform;
 
 			bool uniform = m->get_shift();
@@ -3126,7 +3126,7 @@ void CanvasItemEditor::_draw_selection() {
 			}
 		} else {
 
-			Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * Transform2D(canvas_item->_edit_get_rotation(), canvas_item->_edit_get_position())).orthonormalized();
+			Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * canvas_item->_edit_get_transform()).orthonormalized();
 			Transform2D simple_xform = viewport->get_transform() * unscaled_transform;
 			viewport->draw_set_transform_matrix(simple_xform);
 			viewport->draw_texture(position_icon, -(position_icon->get_size() / 2));
@@ -3138,7 +3138,7 @@ void CanvasItemEditor::_draw_selection() {
 			if (canvas_item->_edit_use_pivot()) {
 
 				// Draw the node's pivot
-				Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * Transform2D(canvas_item->_edit_get_rotation(), canvas_item->_edit_get_position() + canvas_item->_edit_get_pivot())).orthonormalized();
+				Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * canvas_item->_edit_get_transform()).orthonormalized();
 				Transform2D simple_xform = viewport->get_transform() * unscaled_transform;
 
 				viewport->draw_set_transform_matrix(simple_xform);
@@ -3183,7 +3183,7 @@ void CanvasItemEditor::_draw_selection() {
 			bool is_alt = Input::get_singleton()->is_key_pressed(KEY_ALT);
 			if ((is_alt && is_ctrl) || tool == TOOL_SCALE || drag_type == DRAG_SCALE_X || drag_type == DRAG_SCALE_Y) {
 				if (_is_node_movable(canvas_item)) {
-					Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * Transform2D(canvas_item->_edit_get_rotation(), canvas_item->_edit_get_position())).orthonormalized();
+					Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * canvas_item->_edit_get_transform()).orthonormalized();
 					Transform2D simple_xform = viewport->get_transform() * unscaled_transform;
 
 					Size2 scale_factor = Size2(SCALE_HANDLE_DISTANCE, SCALE_HANDLE_DISTANCE);
@@ -3402,7 +3402,7 @@ void CanvasItemEditor::_draw_invisible_nodes_positions(Node *p_node, const Trans
 
 		// Draw the node's position
 		Ref<Texture> position_icon = get_icon("EditorPositionUnselected", "EditorIcons");
-		Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * Transform2D(canvas_item->_edit_get_rotation(), canvas_item->_edit_get_position())).orthonormalized();
+		Transform2D unscaled_transform = (xform * canvas_item->get_transform().affine_inverse() * canvas_item->_edit_get_transform()).orthonormalized();
 		Transform2D simple_xform = viewport->get_transform() * unscaled_transform;
 		viewport->draw_set_transform_matrix(simple_xform);
 		viewport->draw_texture(position_icon, -position_icon->get_size() / 2, Color(1.0, 1.0, 1.0, 0.5));

scene/2d/canvas_item.cpp

@@ -360,6 +360,10 @@ bool CanvasItem::_edit_is_selected_on_click(const Point2 &p_point, double p_tole
 	}
 }
 
+Transform2D CanvasItem::_edit_get_transform() const {
+	return Transform2D(_edit_get_rotation(), _edit_get_position() + _edit_get_pivot());
+}
+
 bool CanvasItem::is_visible_in_tree() const {
 
 	if (!is_inside_tree())
@@ -1133,6 +1137,7 @@ void CanvasItem::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_edit_set_pivot", "pivot"), &CanvasItem::_edit_set_pivot);
 	ClassDB::bind_method(D_METHOD("_edit_get_pivot"), &CanvasItem::_edit_get_pivot);
 	ClassDB::bind_method(D_METHOD("_edit_use_pivot"), &CanvasItem::_edit_use_pivot);
+	ClassDB::bind_method(D_METHOD("_edit_get_transform"), &CanvasItem::_edit_get_transform);
 
 	ClassDB::bind_method(D_METHOD("get_canvas_item"), &CanvasItem::get_canvas_item);
 

scene/2d/canvas_item.h

@@ -281,6 +281,8 @@ public:
 	virtual void _edit_set_pivot(const Point2 &p_pivot){};
 	virtual Point2 _edit_get_pivot() const { return Point2(); };
 
+	virtual Transform2D _edit_get_transform() const;
+
 	/* VISIBILITY */
 
 	void set_visible(bool p_visible);